Dumbbell support



FIG. 1 is a front elevational view of the dumbbell support showing my new design;

FIG. 2 is a rear elevational view of the dumbbell support thereof;

FIG. 3 is a left-side elevational view of the dumbbell support thereof;

FIG. 4 is a top plan view of the dumbbell support thereof;

FIG. 5 is a bottom plan view of the dumbbell support thereof; and,

FIG. 6 is a perspective view of the dumbbell support thereof. 

I claim, the ornamental design for the dumbbell support, as shown and described. 